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|
(.module:
[lux #*
[control
[monad (#+ do Monad)]]
[data
["&" lazy]]
[math
["r" random]]]
lux/test)
(context: "Lazy."
(<| (times 100)
(do @
[left r.nat
right r.nat
#let [lazy (&.freeze (n/* left right))
expected (n/* left right)]]
($_ seq
(test "Lazying does not alter the expected value."
(n/= expected
(&.thaw lazy)))
(test "Lazy values only evaluate once."
(and (not (is? expected
(&.thaw lazy)))
(is? (&.thaw lazy)
(&.thaw lazy))))
))))
(context: "Functor, Apply, Monad."
(<| (times 100)
(do @
[sample r.nat]
($_ seq
(test "Functor map."
(|> (&.freeze sample)
(:: &.functor map inc)
&.thaw
(n/= (inc sample))))
(test "Monad."
(|> (do &.monad
[f (wrap inc)
a (wrap sample)]
(wrap (f a)))
&.thaw
(n/= (inc sample))))
(test "Apply apply."
(let [(^open "&;.") &.monad
(^open "&;.") &.apply]
(|> (&;apply (&;wrap inc) (&;wrap sample))
&.thaw
(n/= (inc sample)))))
))))
|
